<?php
	function valid_email($email) {
		// First, we check that there's one @ symbol, and that the lengths are right
		
		if (!ereg("^[^@]{1,64}@[^@]{1,255}$", $email)) {
			// Email invalid because wrong number of characters in one section, or wrong number of @ symbols.
			return false;
		}

		// Split it into sections to make life easier
		$email_array = explode("@", $email);
		$local_array = explode(".", $email_array[0]);
		for ($i = 0; $i < sizeof($local_array); $i++) {
			
			if (!ereg("^(([A-Za-z0-9!#$%&#038;'*+/=?^_`{|}~-][A-Za-z0-9!#$%&#038;'*+/=?^_`{|}~\.-]{0,63})|(\"[^(\\|\")]{0,62}\"))$", $local_array[$i])) {
				return false;
			}

		}

		
		if (!ereg("^\[?[0-9\.]+\]?$", $email_array[1])) {
			// Check if domain is IP. If not, it should be valid domain name
			$domain_array = explode(".", $email_array[1]);
			
			if (sizeof($domain_array) < 2) {
				return false;
				// Not enough parts to domain
			}

			for ($i = 0; $i < sizeof($domain_array); $i++) {
				
				if (!ereg("^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|([A-Za-z0-9]+))$", $domain_array[$i])) {
					return false;
				}

			}

		}

		return true;
	}

	include "config.php";
	global $_CONFIG;
	define("MONO_ON", 1);
	require "class/class_db_{$_CONFIG['driver']}

.php";
$db=new database;
$db->configure($_CONFIG['hostname'], $_CONFIG['username'], $_CONFIG['password'], $_CONFIG['database'], $_CONFIG['persistent']);
$db->connect();
$c=$db->connection_id;

if(!$_GET['password']) {
	die("<font color='red'>Invalid - Blank</font>");
}


if(!valid_email($_GET['password'])) {
	die("<font color='red'>Invalid - Bad Format</font>");
}

$un=$_GET['password'];
$q=$db->query("SELECT * FROM users WHERE email='$un'");

if($db->num_rows($q)) {
	die("<font color='red'>Invalid - Already In Use</font>");
}

print "<font color='green'>Valid</font>";
?>
